嵌入式网络数字监控的系统接口与网络带宽测量

【作者】 谢洪波；

【导师】 丁庆生；

【作者基本信息】 电子科技大学 ， 信号与信息处理， 2005， 硕士

【摘要】 监控系统作为安全防卫的一个重要组成部分,在保卫公共安全方面起着重要的作用。论文所研究的是符合当前发展趋势的网络数字监控系统的部分功能的设计与实现。论文首先阐述了研究背景与意义,介绍了网络数字监控系统的优点,指出监控系统由模拟式转变为数字式、网络式的必然趋势。其次,论文介绍了数字监控系统中所涉及的部分技术,包括图像数据压缩、图像数据的编码方法与标准以及音频编码的技术。随后简要介绍了嵌入式网络数字监控系统的系统结构并对其进行了模块划分,概述了每一模块的主要功能。论文集中讨论了嵌入式网络数字监控系统中的自检模块的设计与实现,阐述了该模块与主控机的通信、论述了LCD 界面接口的实现、模块的安全性设计以及该系统的密钥存储管理。此外论文还分析了客户端到服务器端网络带宽的测量方法,并根据该系统的实际情况在客户端实现客户端到服务器端的网络通路瓶颈带宽测量。采用Client/Server 模式的网络数字监控系统,可以有效地对指定点实行远程监控,具有广泛的应用前景。更多还原

【Abstract】 As an important component of the security defense, the monitor system plays avital role. This paper aims to research the design and implement of some functions inthe digital monitor system which accords with the current developing trend.First of all, this paper illuminates the research background and significance of theproject, and summarizes the advantages of the digital monitor system. It’s pointed outthat the analog monitor system will be replaced by the digital one.In the next place, some techniques in the digital monitor system, including imagedata compression、the methods and criteria of digital coding and audio coding, areintroduced in this paper.In additon, the paper briefly analogizes the system structure of embedded digitalmonitor system and module partition, and summarizes each module’s function.Finally, the thesis puts its emphasis on the design and development of automaticdetection module in the digital monitor system. Some key problems, such as thecommunication between the module and the server, the interface of LCD, the securityof the module, the storage and management of secret key in this digital monitorsystem, are illustrated in detail. In addition through analyzing the end-to-endmeasurement method for link bandwidth the paper find a measurement method forbottleneck link speed from client to server according to this digital monitor system.The digital monitor system with Client/Server framework could be used in theremote monitor and has the extensive application foreground.更多还原